Optical cavities are widely used to enhance the interaction between atoms and light. Typical designs using a geometrically symmetric structure in the near-concentric regime face a tradeoff between mechanical stability and high single-atom cooperativity. To overcome this limitation, we design and implement a geometrically asymmetric standing-wave cavity. This structure, with mirrors of very different radii of curvature, allows strong atom-light coupling while exhibiting good stability against misalignment. We observe effective cooperativities ranging from ηeff=10 to ηeff=0.2 by shifting the location of the atoms in the cavity mode. By loading Yb171 atoms directly from a mirror magneto-optical trap into a one-dimensional optical lattice along the cavity mode, we produce atomic ensembles with collective cooperativities up to Nη=2×104. This system opens a way to preparing spin squeezing for an optical lattice clock and to accessing a range of nonclassical collective states.

Geometrically asymmetric optical cavity for strong atom-photon coupling / Kawasaki A.; Braverman B.; Pedrozo-Penafiel E.; Shu C.; Colombo S.; Li Z.; Ozel O.; Chen W.; Salvi L.; Heinz A.; Levonian D.; Akamatsu D.; Xiao Y.; Vuletic V.. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - ELETTRONICO. - 99:(2019), pp. 0-0. [10.1103/PhysRevA.99.013437]

Geometrically asymmetric optical cavity for strong atom-photon coupling

Salvi L.;
2019

Abstract

Optical cavities are widely used to enhance the interaction between atoms and light. Typical designs using a geometrically symmetric structure in the near-concentric regime face a tradeoff between mechanical stability and high single-atom cooperativity. To overcome this limitation, we design and implement a geometrically asymmetric standing-wave cavity. This structure, with mirrors of very different radii of curvature, allows strong atom-light coupling while exhibiting good stability against misalignment. We observe effective cooperativities ranging from ηeff=10 to ηeff=0.2 by shifting the location of the atoms in the cavity mode. By loading Yb171 atoms directly from a mirror magneto-optical trap into a one-dimensional optical lattice along the cavity mode, we produce atomic ensembles with collective cooperativities up to Nη=2×104. This system opens a way to preparing spin squeezing for an optical lattice clock and to accessing a range of nonclassical collective states.
2019
99
0
0
Kawasaki A.; Braverman B.; Pedrozo-Penafiel E.; Shu C.; Colombo S.; Li Z.; Ozel O.; Chen W.; Salvi L.; Heinz A.; Levonian D.; Akamatsu D.; Xiao Y.; Vuletic V.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1261476
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